Idling issues and starting issues?

2004 CHEVROLET TAHOE
235,850 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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RAGINGSOUL
Regardless of the weather when I go to start the truck up it has idling issue and since it's cold it shuts off and then I just have to restart it a couple of times, but it idles super rough and then once it warms up it idles a little better but still rough. I'm not sure if this has to do with the intake manifold.

In one of the videos I'm pointing at an item that I don't know what it is, but it says 93 on it I don't know they are and do they need to be replaced. I've had the truck since 2016 and have never changed those out. I did recently change out the spark plugs, and spark plug wires even though one of the videos I think I said I changed out the spark plugs.

I also get a popping sound on the right side of the engine if you're sitting in the driver seat out of a cylinder, I'm not sure which one though almost like it's not getting fuel or oxygen. I'm not sure if that's in any of the videos or not if you want one, I will try to get one like tomorrow morning or the next time I start it up when it's cold outside.

Anything you can do to help me out I would greatly appreciate it. And I hope that these videos help you out if you need more let me know.
Feb 21, 2025 at 10:48 AM
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STRAILER
  • ASE Certified Mechanic
  • 54,503 POSTS
  • ASE Certified Mechanic
Hello RAGINGSOUL,

Thanks for the video, it helps. It does seem like you have a large vacuum leak, also I check the check engine light on so let's run the codes which can help us see what's going on.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Use this guide when the engine is cold:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Please go over this guide as well:

https://www.2carpros.com/articles/repairing-engine-rough-idle-issues

I think a compression test would be in order as well. Please go over these guides and get back to us.
Feb 21, 2025 at 12:18 PM
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RAGINGSOUL
  • MEMBER
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Thank you Ken, I will work on this over the weekend and get back to you.
Feb 21, 2025 at 1:12 PM
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STRAILER
  • ASE Certified Mechanic
  • 54,503 POSTS
  • ASE Certified Mechanic
Sounds good, have a nice weekend!
Feb 22, 2025 at 11:38 AM
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